American journal of rhinology · 2007
Can we smell without an olfactory bulb?
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Rombaux Philippe, Mouraux André, Bertrand Bernard, Duprez Thierry, Hummel Thomas
Аннотация
BACKGROUND: Lack of an olfactory bulb (OB) is typically associated with anosmia.
METHODS: We present a patient with subnormal olfactory function in whom the OB could not be detected with magnetic resonance imaging (MRI).
RESULTS: Olfactory function was evaluated on two occasions. Orthonasal olfactory function was assessed with the "Sniffin' Sticks" test providing a score equivalent to hyposmia. Retronasal olfactory function was studied with "smell powders" indicating a decreased, but not absence of, olfactory function. Importantly, chemosensory event-related potentials were clearly present in response to olfactory and trigeminal stimuli.
CONCLUSION: This indicates that olfactory function may be present in some subjects even when an OB can not be detected with MRI.
METHODS: We present a patient with subnormal olfactory function in whom the OB could not be detected with magnetic resonance imaging (MRI).
RESULTS: Olfactory function was evaluated on two occasions. Orthonasal olfactory function was assessed with the "Sniffin' Sticks" test providing a score equivalent to hyposmia. Retronasal olfactory function was studied with "smell powders" indicating a decreased, but not absence of, olfactory function. Importantly, chemosensory event-related potentials were clearly present in response to olfactory and trigeminal stimuli.
CONCLUSION: This indicates that olfactory function may be present in some subjects even when an OB can not be detected with MRI.